{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# map"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "List(2, 4, 6, 8)\n",
      "List(2, 4, 6, 8)\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "\u001b[36ma\u001b[39m: \u001b[32mList\u001b[39m[\u001b[32mInt\u001b[39m] = \u001b[33mList\u001b[39m(\u001b[32m1\u001b[39m, \u001b[32m2\u001b[39m, \u001b[32m3\u001b[39m, \u001b[32m4\u001b[39m)\n",
       "defined \u001b[32mfunction\u001b[39m \u001b[36mf\u001b[39m"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "val a = List(1, 2, 3, 4)\n",
    "def f(x: Int): Int = x * 2\n",
    "println( a.map(f) )\n",
    "println( a.map(_ * 2) )"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# reduce"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10\n",
      "24\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "defined \u001b[32mfunction\u001b[39m \u001b[36mg\u001b[39m\n",
       "defined \u001b[32mfunction\u001b[39m \u001b[36mh\u001b[39m"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "def g(left: Int, right: Int): Int = left + right\n",
    "println( a.reduce(g) )\n",
    "def h(left: Int, right: Int): Int = left * right\n",
    "println( a.reduce(h) )"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Scala",
   "language": "scala",
   "name": "scala"
  },
  "language_info": {
   "codemirror_mode": "text/x-scala",
   "file_extension": ".scala",
   "mimetype": "text/x-scala",
   "name": "scala211",
   "nbconvert_exporter": "script",
   "pygments_lexer": "scala",
   "version": "2.11.11"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}